AU3767789A - Atomising apparatus and process - Google Patents

Atomising apparatus and process

Info

Publication number
AU3767789A
AU3767789A AU37677/89A AU3767789A AU3767789A AU 3767789 A AU3767789 A AU 3767789A AU 37677/89 A AU37677/89 A AU 37677/89A AU 3767789 A AU3767789 A AU 3767789A AU 3767789 A AU3767789 A AU 3767789A
Authority
AU
Australia
Prior art keywords
powders
atomized droplets
jets
spray deposits
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
AU37677/89A
Other versions
AU636569B2 (en
Inventor
Jeffrey Stuart Coombs
Gordon Roger Dunstan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik Osprey Ltd
Original Assignee
Osprey Metals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osprey Metals Ltd filed Critical Osprey Metals Ltd
Publication of AU3767789A publication Critical patent/AU3767789A/en
Application granted granted Critical
Publication of AU636569B2 publication Critical patent/AU636569B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123—Spraying molten metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/086—Cooling after atomisation
    • B22F2009/0868—Cooling after atomisation by injection of solid particles in the melt stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/088—Fluid nozzles, e.g. angle, distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Saccharide Compounds (AREA)

Abstract

Apparatus for the production of powders or spray deposits is provided in which a metal or metal alloy stream is broken up into atomized droplets by primary jets of atomizing gas. In order to remove further heat from the atomized droplets, secondary jets are positioned adjacent the primary jets for directing cooling fluid in the form of cryogenic liquified gas at the atomized droplets. The apparatus permits the formation of coarser powders, powders from alloys with a wide solidus/liquidus gap in a shorter atomizing chamber, or spray deposits with increased yield of deposited material.
AU37677/89A 1988-06-06 1989-06-06 Atomising apparatus and process Ceased AU636569B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8813338 1988-06-06
GB888813338A GB8813338D0 (en) 1988-06-06 1988-06-06 Powder production

Publications (2)

Publication Number Publication Date
AU3767789A true AU3767789A (en) 1990-01-05
AU636569B2 AU636569B2 (en) 1993-05-06

Family

ID=10638145

Family Applications (1)

Application Number Title Priority Date Filing Date
AU37677/89A Ceased AU636569B2 (en) 1988-06-06 1989-06-06 Atomising apparatus and process

Country Status (8)

Country Link
US (1) US5196049A (en)
EP (1) EP0409905B1 (en)
JP (1) JPH03505896A (en)
AT (1) ATE109214T1 (en)
AU (1) AU636569B2 (en)
DE (1) DE68917132T2 (en)
GB (1) GB8813338D0 (en)
WO (1) WO1989012116A1 (en)

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US5366206A (en) * 1993-12-17 1994-11-22 General Electric Company Molten metal spray forming atomizer
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US6444009B1 (en) * 2001-04-12 2002-09-03 Nanotek Instruments, Inc. Method for producing environmentally stable reactive alloy powders
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Also Published As

Publication number Publication date
EP0409905B1 (en) 1994-07-27
EP0409905A1 (en) 1991-01-30
WO1989012116A1 (en) 1989-12-14
GB8813338D0 (en) 1988-07-13
DE68917132T2 (en) 1994-11-10
AU636569B2 (en) 1993-05-06
US5196049A (en) 1993-03-23
JPH03505896A (en) 1991-12-19
ATE109214T1 (en) 1994-08-15
DE68917132D1 (en) 1994-09-01

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